Wolfgang, W. et al.(2021).Information and communication technologies in tourism 2021 :proceedings of the ENTER 2021 eTourism Conference, January 19–22, 2021 .Cham, Switzerland:Springer Open.
Gaya MLA
Wörndl, Wolfgang. et al."Information and communication technologies in tourism 2021 :proceedings of the ENTER 2021 eTourism Conference, January 19–22, 2021".Cham, Switzerland:Springer Open,2021.Electronic Resource.